Package org.apache.commons.cli

Class OptionValidator

java.lang.Object

org.apache.commons.cli.OptionValidator

final class OptionValidator
extends Object

Validates an Option string.

Since:

1.1

Version:

$Id: OptionValidator.java 1544819 2013-11-23 15:34:31Z tn $

Constructor Summary

Constructors

Constructor	Description
OptionValidator()

Method Summary

Modifier and Type	Method	Description
private static boolean	isValidChar(char c)	Returns whether the specified character is a valid character.
private static boolean	isValidOpt(char c)	Returns whether the specified character is a valid Option.
(package private) static void	validateOption(String opt)	Validates whether opt is a permissible Option shortOpt.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

OptionValidator

OptionValidator()

Method Details

validateOption

static void validateOption(String opt)
                    throws IllegalArgumentException

Validates whether opt is a permissible Option shortOpt. The rules that specify if the opt is valid are:

• a single character opt that is either ' '(special case), '?', '@' or a letter
• a multi character opt that only contains letters.

In case opt is null no further validation is performed.

Parameters:

opt - The option string to validate, may be null

Throws:

IllegalArgumentException - if the Option is not valid.

isValidOpt

private static boolean isValidOpt(char c)

Returns whether the specified character is a valid Option.

Parameters:

c - the option to validate

Returns:

true if c is a letter, '?' or '@', otherwise false.

isValidChar

private static boolean isValidChar(char c)

Returns whether the specified character is a valid character.

Parameters:

c - the character to validate

Returns:

true if c is a letter.